OCTANE

n-Octane (C8H18) is a colorless liquid that is insoluble in water. It is obtained by fractional distillation of petroleum. Octane is flammable and moderately toxic. It is used for the Octane Number calibration of antiknock properties of fuels. It is also used as a solvent and in organic synthesis.

Molecular weight: 114.224

Critical temperature: 568.8 K

Melting point: 216.35 K

Critical pressure: 2.486 MPa

Normal boiling point: 398.8 K

Critical density: 232 kg/m3

Table 1. Octane: Properties of the saturated liquid and vapor

The values of thermophysical properties have been obtained from Beaton, C.F. and Hewitt, G.F (1989).